Please read the link I submitted. You are wrong, Six. rc.local is executed before anything else

More proof:
http://www.fedorafaq.org/basics/

Q: How do I run something when the computer starts?
A: You have two choices, either you can run something before anybody logs in, or you can run something immediately after you log in.

To run a command right after you boot, before anybody logs in, add the command to the file /etc/rc.local: